Patagonian Mockingbird
Mimus patagonicus
The Patagonian mockingbird is 22 to 25 cm (8.7 to 9.8 in) long. Males weigh 44.4 to 61.8 g (1.57 to 2.18 oz) and females 43.8 to 65.4 g (1.54 to 2.31 oz). Adults have a brown crown, a whitish supercilium, and a blackish line through the eye. Their upperparts are plain grayish brown that is paler on the rump. The wings are blackish and show two thin pale bars when folded. Their tail is blackish except for the white outer edge of the outermost feathers and white tips on the others. They are buffy gray below that is paler on the throat and belly. Voice: The Patagonian mockingbird sings continuously for long periods from an open perch or from within vegetation, "a warbling series of varied notes and phrases". It mimics other species.
ID text from Wikipedia, CC BY-SA 4.0
White-banded Mockingbird
Mimus triurus
The white-banded mockingbird is 20 to 23.5 cm (7.9 to 9.3 in) long and weighs 49 to 54 g (1.7 to 1.9 oz). The male is slightly larger than the female. Adults have a grayish crown, a white supercilium, a blackish line through the eye, and speckled cheeks. Their upperparts are smoky gray blending to reddish cinnamon on the rump. The central third of the tail is black and the outer feathers white. The folded wing shows a broad white band; the rest of the wing is blackish. The white on the wings and tail are conspicuous in flight. Voice: The white-banded mockingbird is a "uperlative songster, the most outstanding of genus". Its song is " a long, loud and extended stream of melodic notes and phrases" and it is an excellent mimic.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Patagonian Mockingbird and White-banded Mockingbird.